Uplink control information collision handling

Abstract

Embodiments are presented herein of apparatuses, systems, and methods for a user equipment device (UE) to group transmissions into one or more groups, e.g., of various priority levels and/or types of transmissions. The UE may resolve collisions, e.g., according to one or more procedures described herein. The UE may transmit the transmissions according to the resolutions.

What is claimed is: 
     
       1. A method, comprising:
 at a user equipment device (UE):
 connecting to a base station; 
 receiving, from the base station, first downlink control information (DCI), scheduling a first transmission, the first DCI indicating a first priority for the first transmission using a priority field of one or more bits; 
 receiving, from the base station, second DCI scheduling a second transmission, the second DCI indicating a second priority for the second transmission using the priority field; 
 detecting a collision during a symbol of a first slot between the first transmission and the second transmission; 
 applying one or more rules to resolve the collision based at least in part on the first priority and the second priority; and 
 performing a transmission during the first slot according to the resolution; and 
 receiving, from the base station, third DCI scheduling a third transmission, the third DCI not including the priority field. 
 
 
     
     
       2. The method of  claim 1 , wherein the first transmission is associated with ultra-reliable low latency communication and the second transmission is associated with enhanced mobile broadband. 
     
     
       3. The method of  claim 1 , wherein said detecting and said applying are performed at a physical (PHY) layer of the UE. 
     
     
       4. The method of  claim 1 , wherein said detecting and said applying are performed at a lower layer of the UE. 
     
     
       5. The method of  claim 1 , wherein respective priority fields of the first and second DCI comprise 1 bit, wherein the third DCI includes zero bits for the priority field. 
     
     
       6. The method of  claim 1 , wherein said performing the transmission during the first slot comprises adjusting an amount of resources used for the transmission based on a maximum payload size. 
     
     
       7. The method of  claim 6 , wherein said adjusting the amount of resources comprises:
 determining a sum of a bit size of the first transmission and a bit size of the second transmission; 
 determining that the sum exceeds the maximum payload size; and 
 dropping at least one bit based on the determination that the sum exceeds the maximum payload size. 
 
     
     
       8. The method of  claim 6 , wherein said adjusting the amount of resources comprises adjusting a time used for at least one of the first transmission and/or the second transmission. 
     
     
       9. A method, comprising:
 at a base station:
 connecting to a user equipment device (UE); 
 transmitting, to the UE, first downlink control information (DCI), scheduling a first transmission, the first DCI indicating a first priority for the first transmission using a priority field of one or more bits; 
 transmitting, to the UE, second DCI scheduling a second transmission, the second DCI indicating a second priority for the second transmission using the priority field; 
 receiving, from the UE according to the first and second DCI; and 
 transmitting, to the UE, third DCI scheduling a third transmission, the third DCI not including the priority field. 
 
 
     
     
       10. The method of  claim 9 , wherein the first transmission is associated with ultra-reliable low latency communication and the second transmission is associated with enhanced mobile broadband. 
     
     
       11. The method of  claim 9 , wherein respective priority fields of the first and second DCI comprise 1 bit, wherein the third DCI includes zero bits for the priority field. 
     
     
       12. The method of  claim 9 , wherein said receiving includes an amount of resources based on a maximum payload size. 
     
     
       13. An apparatus, comprising:
 a processor configured to cause a user equipment device (UE):
 connect to a base station; 
 receive, from the base station, first downlink control information (DCI), scheduling a first transmission, the first DCI indicating a first priority for the first transmission using a priority field of one or more bits; 
 receive, from the base station, second DCI scheduling a second transmission, the second DCI indicating a second priority for the second transmission using the priority field; 
 detect a collision during a symbol of a first slot between the first transmission and the second transmission; 
 apply one or more rules to resolve the collision based at least in part on the first priority and the second priority; and 
 perform a transmission during the first slot according to the resolution; and 
 receive, from the base station, third DCI scheduling a third transmission, the third DCI not including the priority field. 
 
 
     
     
       14. The apparatus of  claim 13 , wherein the first transmission is associated with ultra-reliable low latency communication and the second transmission is associated with enhanced mobile broadband. 
     
     
       15. The apparatus of  claim 13 , wherein said detecting and said applying are performed at a physical (PHY) layer of the UE. 
     
     
       16. The apparatus of  claim 13 , wherein said detecting and said applying are performed at a lower layer of the UE. 
     
     
       17. The apparatus of  claim 13 , wherein respective priority fields of the first and second DCI comprise 1 bit, wherein the third DCI includes zero bits for the priority field. 
     
     
       18. The apparatus of  claim 13 , wherein to perform the transmission during the first slot comprises adjusting an amount of resources used for the transmission based on a maximum payload size. 
     
     
       19. The apparatus of  claim 18 , wherein said adjusting the amount of resources comprises:
 determining a sum of a bit size of the first transmission and a bit size of the second transmission; 
 determining that the sum exceeds the maximum payload size; and 
 dropping at least one bit based on the determination that the sum exceeds the maximum payload size. 
 
     
     
       20. The apparatus of  claim 18 , wherein said adjusting the amount of resources comprises adjusting a time used for at least one of the first transmission and/or the second transmission.